Historic heart of Boulogne-sur-Mer
The historic heart of Boulogne-sur-Mer is a real showcase of the geological and architectural heritage of the region.
Boulogne-sur-Mer
The site is accessible all year round
Free
Accessible by public transport
Facilities
- Café
- Dogs welcome
- Visitor information available
- Cycle parking
- Disabled parking
- Accessible footpaths
- Car parking
- Toilets
Geosite details
The historic heart of Boulogne-sur-Mer is a real showcase of the geological and architectural heritage of the region. The town is renowned for its Baincthun stone, a sandstone dating from the Jurassic period, which was used to build many emblematic buildings such as the ramparts, the houses of the Upper Town and the castle-museum. These structures are a testament to the city’s rich history and strategic role over the centuries. As you walk through the cobbled streets, you can appreciate the architectural harmony that combines various styles, ranging from medieval to contemporary.